Automatic photographic-printing machine.



By 2i/r, MM

THEIR ATTORNEY T. C. KORSMO & T. C. OLSON.

AUTOMATIC PHOTOGRAPHIC PRINTING MACHINE. I

IIII IIIIIIIIIIIII 1 T. C. KORSMM T. c. oLso'N.

AUTOMATIC-PHOTOGRAPH() PRINTING MACHINE.

APPLICATION FILED AUG.3.1914.

Patented Aug. 31, 1915.

4 SHEETS-SHEET 2.'

WITNESSES m M f. RK M Oo TANM No Em@ Vo/w WMC@ Uefa JA MMM www THEIRATTORNEY T. c. KoRsMo I T. C. OLSON.

AUTOMATIC PHOTOGRAPHIC PRINTING MACHINE.

APPLICATION FILED AUG. 3. 'I9I4.

Patented Aug. 31, 1915.

4 SHEETS-SHEET 3.

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I I l I I I I Fig-.14'.

77, M Figl. \/\/I I I\I ESSES I I\I \/E I\I TC) RS TOR BdUR/V CONRAD/f/BSMO THON/I 3 C. OLS 0N Eby/2M maf THEIR ATTORNEY UNITED STATESPATENT OFFICE.

TORBJURN CONRAD KORSMO AND THOMAS C. OLSON, OF MADISON, WISCONSIN.

AUTOMATIC PHOTOGRAPHIC-PBINTING MACHINE.

Application filed August 3, 1914.

T0 a//Z Iwlw/nit may concern Be it known that we, ToRnJUnN CONRADKonsnio and T'HoMas C.' (.)LsoN, citizens of the United States, residingat Madison, in theieounty'of Dane and State of llliscolisiii, haveinvented certain new and useful Improvements in Automatic PhotographicPrinting Machines, of which the following .1s a specification.

Our invention relates to motor driven automatic photographic paper orpost card printing machines; and the objects of our invention are toprovide a machine that will, upon placing a sheet of sensitized paper orpost card upon a platen or receiver, carry the same to a negative, holdit in contact the desired time, release it and deposit the same in adarkened receptacle, to provide a machine that will time the exposure inproportion to the strength or brilliancy of the light source employed inthe light cabinet, to provide a machine without shutters, that willregulate the time of exposure by closing or breaking the circuit leadingto the light source in the cabinet.

Additional objects of the invention will appear in the followingcomplete specication, in which the preferred form of the invention isdisclosed.

In the drawings similar characters of reference indicate correspondingparts in all of the views, in which- Figure l, is a side elevation ofour machine; Fig. 2, a vertical longitudinal section on line 11b-B, Fig.3, of the reciprocating switch; Fig. 3, is an end elevation of theswitch; Fig. 4, is a top view or plan of the switch; Fig. 5, is a frontelevation of the switch; Fig.v 6, is a plan of the machine with partsremoved; Fig. 7, is a side elevation of one of the gage actuating links;Fig. S, is a rear elevation of the same; Fig. 9, is a side View of thecarriage with the outer plate removed; Fig. l0, is a plan of the gage;Fig. 11, is a rear elevation of the gage; Fig. 12, is a longitudinalsection through the platen on lines @1 -H, Fig. 13; Fig. 13, is anelevation of the entire machine from the motor end; Fig. 14, is avertical section on lines (-D, Fig. G; Fig. 15, is a section on lineK-L, Fig. 1G; Fig. 16, is a view of the recipro ating and levermovements and connections.

The bed or frame of our machine comprises two longitudinal wooden rails1, reduced in width for a distance and at one end Specification ofLetters Patent.

Patented Aug. 31, 1915.

Serial No. 855,536.

the said rails are spaced apart and secured to each other by metal barsAt the narrow ends, a distance from the bars 2, is disposed a bar 3, ontop of the rails l. Said bar 3, having three depending lugs, oneadjacent each end and one approximately at the center thereof. The twoouter lugs are drilled and into each is secured a round rod 5. whichextends to the opposite end of the wooden rails 1, passing throughdepending lugs on the two transverse bars at, and secured to the same bythe set screws 7. The bars 2, are secured at their outer ends to the topof the ails 1, then depressed between the rails and on the top of thedepressed portion an electric motor 8, is mounted. To the. end of themotor shaft 9, a coupling 10, is secured, and to the opposite end of thecoupling a shaft 11, is attached. Said shaft extending through thebearing 12, in carriage 13, andjournaled at its opposite end in bearing14. Upon said shaft 11, is cut the worm l5, and in mesh with the saidworm is worm gear 16, mounted upon the transverse shaft 17.

rlhe carriage 13, before mentioned eomprises two side plates 13, two endplates 1S, and one intermediate plate 1S). Both side plates haveoutwardly extending bosses 20, adjacent their ends and lower edgesadapted to slide upon a rod and to be secured in the desired location bythe set screws 7. Through one end of the side plates 13, a longitudinalslot 21, is cut and above said slot lugs are disposed. Below the slotare disposed the lugs 23. To the underside of the lugs is secured byscrewsl 2%, a fiber bar 25, adapted to be moved longitudinally of thelugs by means of the slots 2G. At one end of the fiber rail 25, a lug"27, extends upward and has a threaded hole through the same, adapted toreceive the adjusting screw 28. Said screw being loosely disposedthrough a lug 29, which is integral with the side plate 13, therebyproviding a means -for adjusting the fiber bar when the screws Q4, areloosened. Upon the lower side of the said bar 25, a metal plate 39, issecured flush with the same at one end and extending upward on the lugat the other end a distance sufficient to admit of attaching an electricconductor 29, by means otl the binding screw 30. On the top of the lugsis secured the fiber rail 3l, which is covered on the top and both endsby a metal band 3i.. rl`he said metal band being connected to a sourceof current by the lconductor 33, which passes trom a motor 'through aseries of lamps 3l, and back to binding screw 35.

Mounted in sliding contact between the two fiber rails 25, and 31, is aswitch block 3G, constructed oit' liber, with one hole passing from topto bottom thereof, and one passing upward a distance from the bottom. Inthe first mentioned opening two carbon brushes 37, are disposed, havinga coil spring between them. In the other and last mentioned opening acarbon plug 38, is disposed with a spring on the top thereof for purposeof balancing the switch on the rails. The switch having a reciprocatingmovement on the rails and the lower carbons being in constant contactwith the metal band 8:2, it is clear that when the switch passes to apoint where the upper carbon brush 37,

engages the metal plate 39, a circuit will be closed through the lampsand will remain closed until the switch on its return movement passesottl of said plate 39.

The switch is operated by a crank move-` ment connected to a motorssource of current being the same line that supplies the lamps, it isapparent that a weakeniiiig of the current would cause the motor to slowdown and the brilliancy of the light to decrease thereby makingnecessary a longer exposure the sensitized material. "lhe motors sourceof current being the same asv that supplying the lamps, it is obviousthat the weakening of the light wouldeti'ect the exposure controllingmechanism in like manner, and cause the time of exposure to increase inpro )ortion to the brilliant-.y of the light, there y avoiding weak orundertimed prints.

rl`he before mentioned shaft 17, is journaled in bearings 110, inthecarriage 13, and on one end is crank arm 41, integral therewith. In theouter end of said crank arm is disposed wrist pin i2, and upon the saidwrist pin contiguous the arm is revolubly connected the slotted rod 113,and abutting the same on the pin is revolubly disposed one end of theconnecting rod 44. The other end of said rod is secured to the wrist pinl5, which passes through the switch block 36, and is secured inoperative relation thereto, by nut 4G. To the inner wall 1S), of thecarriage 13, is pivotally attached the rocker4 arm 47, by the stud 48.In the lower end of said arm is disposed a wrist pin 49, which passesthrough the slot in the arm 43, and to which it is connected in slidingengagement. To the said wrist pin 49, between the rocker arm and thesaid slotted arm is4 pivotally attached a connecting rod 50, theopposite end of which is attached to a depending arm 51, integral withthe barrel .72. Integral with said barrel and extending upward from theopposite end from the depending arm is bracket 53, to the upper face ofwhich is secured one end of the platen 54, by means of the screw I ponthe back of the said platen, a distance from each end and adjacent thelower edge are two round bosses 50, which are bored out to form stutlingboxes. A threaded gland or follower :'17, is disposed in each one ofsaid stuffing boxes. Said glands are drilled lo admit of a bifurcatedgage :38, heilig arranged to slide through said glands and platen. Aforni of packing being interposed to provide the desired resistance tothe movement of the gage. Upon the back of the platen adjacent one endand intermediate the width thereof, is located a barrel 59, and a springactuated guide pin (30, is arranged within the same and adjusted forresistance by the cap 61, see Fig. 12.

'.lo one of the end plates 1S, of the. earriage 13, are secured thespring links G2. The loop portion of said links surrounding the centralbar of the gage 5S, .impart an intermittent reciprocating n'iorement tothe gage coincident with a corresponding movement of the platen.Extending the gage ends through the platen when it is thrown back andthe card placed thereon and receding when the platen closes against thenegative, see Fig. 1. The intermittent movement referred to'is producedby the slotted arm 43, allowing the rocker arm -l7, to rest during a.portion of the revolution of the crank arm l1.

A distance down from the top and back from the end of the carriage ashaft (33, is journaled and passes t'ansversely through both side plates13, and the intermediate plate 19. U pon said shaft between the frontplate and the intermediate plate the barrel loosely mounted and t0 theopposite side ot' the intermediate plate a torsion spring is fastened atone end and surrounding said shaft extends to the bracket (35, to whichthe other en d is attached. The brackets 53, and (3.3, are both rigidlysecured to the. back of the platen, see Fig. 13, and although thebracket arries the platen to an approximate contact with the negative,the torsion spring through its connection with the bracket (35.completes the contact. After the card G7, has been exposed the desiredtime and the platen starts on its backward movement, the 'ard isreleased and drops down onto the endless belt Gli, and is carriedthereby to the box G8, which is light proof. Upon the end of the frameopp@- site the motor, a. cabinet 72, is mounted and secured to the barsl, in any convenient manner. Two rods (if), are disposed inside of saidcabinet a distance from the bottoni and sides thereof` carrying insliding contact, a liber bar 70, transversely of the cabinet. Upon thetop of said bar are mounted a. plurality of electric lamps 3l. (.)n thefront side of said cabinet adjacent the top a portion is removed and theaperture, .adapted to hold a negative or film, against which they platendeposits and holds the paper or iard to be printed. The lamps aforesaidbeing mounted on the sliding bar ran be located the desired distancefrom the negative and secured in that position by means of the adjustingthreaded rod 71.

The endless belt (i6, before referred to is mounted on rollers 73,disposed between the rails l, and are driven by the belt 74, from sheave75, on shaft 17, to sheave 76, see Fig. 14. The end ofthe frame 1, underthe motoiis mounted on standards 7T. The cabinet end of the frame isinclosed in a suitable light proof casing to protect the prints in theirpassage from the negative to the box (58, and if desirable aruby lightcan be mounted on the top of the cabinet to guide the operator.

t is obvious that the most minute adjustment of the platen in relationto the negatiif'e an be attained by sliding the carriage on the rods 5,by means of the adjusting screw 6 which is threaded and passes througha` oss on the end plate 18.see Fig. l.

There has thus been provided a simple and eiiicient device of the kinddescribed and for the purpose specified.

Having thus fullyl described the invention, what is claimed as new, is

l. In a photographic printing machine, a main frame comprisingsiderails, rods extending longitudinally thereof inside the rails, meansfor securing the rods to the frame, a. carriage slidably mounted on saidrods,.a platen pivotally secured to said carriage, said platen adaptedto carry a sheet of sensitized paper or post card into Contact with anegative, a gage carried by said platen for holding the paper or card inproper position and releasing same after exposure, means within thecarriage for imparting an intermittent reciprocating movement to theplaten and gage, all substantially as described.

2. In a 'photographic printing machine, a main frame, an electric motormounted upon one end of said frame, rods extending 1ongitudinally ofsaid frame, a carriage mounted on said rods, means for adjusting thecarriage on .said rods, a shaft extending from said motor, a couplingconnecting said motor shaft to a second shaft, said second shaftrevolubly disposed within ljournal boxes'in said carriage, a wormintegral with said second shaft, a worm gear meshing with said worm, atransverse shaft carrying the said worm gear, a crank arm at one end ofsaid shaft, a wrist pin in the outer end of said crank arm, a slottedrod connected to said wrist pin contiguous the crank arm, a connectingrod connected to said wrist pin ciprocating movement therefrom, allsub-r stantially as described.

3. In a photographic printing machine, a main frame, a motor mounted onone end of the frame, rods extending longitudinally of the frame, acarriage mounted on the said `rods, a shaft extending from the motorthrough the carriage, a worm on said shaft, a worm gear meshing withsaid worm, a shaft upon which said Worm gear is mounted a crank arm atone end of said shaft, a wrist pin in said crank arm, a connecting rodattached at one end to said wrist pin and the other end of said rodconnected to a switch block, through a slot in the side of the carriage,two outwardly extending lugs attached to the side of the carriage aboveIand in alinement with said slot, a tiber bar secured to the underside ofsaid lugs by screws disposed in slots in said lugs, an adjusting screwadapted to 4move said bar on said lugs, a metal plate secured to thelower side of said bar for a portion of its length from one end, abinding screw passing through said plate for attacl'iing a wire thereto,a second fiber bar secured to the lugs on the carriage a distance belowand in alinement with the first bar, a metal plate extending over theentire top and both ends of said second bar and secured thereto, abinding screw at one end of said plate for att-aching an electric wirethereto, a switch block composed of fiber and disposed in slidingrelation between the two liber bars and operated by the connecting rodaforc said, two carbon brushes in said switch, a spring between saidbrushes for insuring contact with the metal plates, substantially asdescribed.

4. In a photographic printing machine, a main frame, a motor mounted onone end of said frame, rods extending longitudinally of said frame, acarriage mounted on said rods, a cabinet mounted on said rods adjacentthe carriage rods within the cabinet, a fiber bar mounted on said rodswithin the cabinet, a plurality of electric lamps mounted on said fiberbar, means for moving said bar along said rods. means for securing anegative in an aperture in the end of said cabinet, wires connected to asource of cm:- rent and attached to the binding post on one of the fiberbars aforesaid and through the lamps to the binding post on the otherfiber bar, a reciprocating switch block in sliding `contact with saidfiber bars for closing or breaking the current through the lamps, acarrier adapted to .receive the prints from the platen and deposit thesaine in a light proof receptacle disposed under said carrier. l

5. In a photographic printing machine, a main frame, a motor mounted ononexend of said frame, rods extending longitudinally of said frame, acarriage mounted on said rods, a shaft journaled in said carriageadjacent the top and one end, a barrel. mounted on said shaft, adepending arm integral with said barrel, a means for oscillating saidarm, a bracket also integral -with said barrel, a platen secured at oneend to Said bracket, a second bracket loosely disposed on said shaft andsecured to the other end of said platen, a torsion spring disposed onsaid shaft one end of said spring attached to the second bracket and theother attached to the intermediate Wall of the said carriage for thepurpose of producing a spring pressure of the platen against thenegative, substantially as described.

In testimony whereof we affix our signatures in the presence of twosubscribing witnesses.

TORBJURN CONRAD KoRsMo. THos. o. oLsoN.

l/Vitnesses:

E. S. BARMEN, C. BosTAD.

